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$518+ Cheap flights from Heathrow (LHR) to Knoxville (TYS)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — TYS
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from London Heathrow to Knoxville McGhee Tyson are usually found in March or November, booked 80 days in advance, depart on a Friday or Monday and return on a Wednesday

Cheap flight deals from Heathrow to Knoxville

Discover tips and strategies to find the most affordable flight options for your journey from Heathrow (LHR) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$626
(TravelUp)

One-way from

$518
(British Airways)

Popular in

August

Cheapest in

March

Average price

$791
From London Heathrow to Knoxville McGhee Tyson
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One-way flight from London Heathrow to Knoxville McGhee Tyson
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Highest demand for flights based on searches. 16% potential increase in price ($186 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($40 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Heathrow to Knoxville

Cheapest flights from Heathrow to Knoxville
Explore the most affordable flight options available from Heathrow to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This TravelUp deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/13:50 pmLHR - TYS
1 stop32h 09mVirgin Atlantic
Wed 12/103:56 pmTYS - LHR
1 stop10h 54mVirgin Atlantic
Deal found 9/11$626
This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/262:10 pmLHR - TYS
1 stop13h 40mLufthansa
Tue 10/710:51 amTYS - LHR
1 stop14h 29mLufthansa
Deal found 9/10$631
This TravelUp deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/262:10 pmLHR - TYS
1 stop13h 40mLufthansa
Mon 10/62:00 pmTYS - LHR
1 stop13h 20mLufthansa
Deal found 9/10$632
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/267:45 amLHR - TYS
2 stops18h 26mUnited Airlines
Tue 10/72:00 pmTYS - LHR
2 stops14h 20mUnited Airlines
Deal found 9/10$635
This Expedia deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:50 amLHR - TYS
2 stops17h 39mMultiple Airlines
Wed 12/177:25 pmTYS - LHR
2 stops30h 05mMultiple Airlines
Deal found 9/11$641
This TravelUp deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:55 amLHR - TYS
1 stop18h 00mBritish Airways
Wed 12/173:39 pmTYS - LHR
1 stop9h 56mBritish Airways
Deal found 9/11$642
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:30 amLHR - TYS
2 stops18h 30mDelta
Wed 12/173:56 pmTYS - LHR
1 stop10h 54mDelta
Deal found 9/11$645
This TravelUp deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/278:20 amLHR - TYS
2 stops20h 24mVirgin Atlantic
Tue 10/72:55 pmTYS - LHR
1 stop17h 35mVirgin Atlantic
Deal found 9/10$646
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/36:35 amLHR - TYS
2 stops33h 13mUnited Airlines
Wed 12/177:25 pmTYS - LHR
2 stops30h 45mUnited Airlines
Deal found 9/11$651
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:00 pmLHR - TYS
1 stop12h 00mDelta
Wed 12/1712:50 pmTYS - LHR
1 stop14h 55mDelta
Deal found 9/11$663
This deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/227:40 amLHR - TYS
1 stop14h 28mUnited Airlines
Sun 11/3010:50 amTYS - LHR
1 stop14h 05mUnited Airlines
Deal found 9/10$664
This Justfly.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/2010:25 amLHR - TYS
1 stop15h 08mUnited Airlines
Fri 11/285:45 amTYS - LHR
1 stop24h 05mUnited Airlines
Deal found 9/10$673

Cheapflights Fare Finder

 
Customize your flight search to find flights from Heathrow to Knoxville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Knoxville that are best for you.

Fly from

Heathrow

Fly to

Knoxville

Route

Depart

Return

Price

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 12/3

10:45 am-6:59 pm

1 stop13h 14m

Knoxville McGhee Tyson

Wed 12/17

2:38 pm-7:50 am

1 stop12h 12m

$626

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 3/6

6:35 am-6:42 pm

2 stops17h 07m

Knoxville McGhee Tyson

Tue 3/10

2:00 pm-5:55 am

1 stop11h 55m

$631

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Fri 9/26

6:50 am-5:18 pm

2 stops15h 28m

Knoxville McGhee Tyson

Tue 10/7

2:16 pm-6:55 am

1 stop11h 39m

$635

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Wed 12/3

6:30 am-8:00 pm

2 stops18h 30m

Knoxville McGhee Tyson

Wed 12/17

3:56 pm-7:50 am

1 stop10h 54m

$645

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Sun 3/1

8:30 am-10:58 pm

2 stops19h 28m

Knoxville McGhee Tyson

Sun 3/8

7:00 am-6:40 am

2 stops19h 40m

$653

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 12/2

8:55 am-4:52 pm

1 stop12h 57m

Knoxville McGhee Tyson

Wed 12/17

2:38 pm-7:50 am

1 stop12h 12m

$663

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 12/1

2:45 pm-10:54 pm

1 stop13h 09m

Knoxville McGhee Tyson

Tue 12/16

5:09 pm-9:15 am

1 stop11h 06m

$663

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Thu 12/4

12:05 pm-11:44 pm

1 stop16h 39m

Knoxville McGhee Tyson

Mon 12/15

9:10 am-10:15 am

1 stop20h 05m

$663

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Mon 12/1

11:05 am-11:09 pm

1 stop17h 04m

Knoxville McGhee Tyson

Mon 12/15

3:56 pm-7:50 am

1 stop10h 54m

$663

LondonKnoxville

LHR - TYS

LHRTYS

London Heathrow

Tue 12/2

10:00 am-7:54 pm

1 stop14h 54m

Knoxville McGhee Tyson

Mon 12/15

2:30 pm-6:40 am

1 stop11h 10m

$663

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
2

Best time to book a flight from Heathrow to Knoxville

Have a flexible travel schedule? Discover the best time to fly to Knoxville from Heathrow with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Heathrow Airport to Knoxville

How far ahead should I book a flight from London Heathrow Airport to Knoxville?

Use this chart to determine the optimal time to book a round-trip flight from Heathrow to Knoxville. Price data was last updated on August 29, 2025.

To ensure you get the cheapest price possible for a flight from London Heathrow Airport to Knoxville, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from London Heathrow Airport to Knoxville?

Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of $294). Flying from London Heathrow Airport to Knoxville in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Reviews of airlines servicing Knoxville

Get insights into the airlines that provide service to Knoxville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Knoxville. Reviews last updated September 11, 2025.
See what other customers who have flown with British Airways from London Heathrow Airport to Knoxville have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,361 reviews

Entertainment

6.4

Food

6.3

Overall

6.7

Comfort

6.7

Boarding

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.
British Airways
6.7
Okay
7,361 reviews
British Airways
6.7
Okay
7,361 reviews

Entertainment

6.4

Food

6.3

Overall

6.7

Comfort

6.7

Boarding

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

Related info for your journey

Find useful and relevant information for your journey from Heathrow to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Knoxville from London Heathrow?

    For a flight from London Heathrow to Knoxville, you will be flying into McGhee Tyson. Knoxville McGhee Tyson (TYS) is just 11.3 mi from the center of the city. McGhee Tyson is the only Knoxville airport and it handles 0 inbound flights from London Heathrow per day. 1 airline has flights to Knoxville McGhee Tyson from London Heathrow on a regular basis.

  • How long is the flight from London Heathrow Airport to Knoxville?

    Airlines like Virgin Atlantic, Lufthansa, and Delta fly from London Heathrow Airport to Knoxville in about 13h 14m. The time it takes to get you to your destination can typically vary by up to 5h 16m. The distance between London Heathrow Airport and Knoxville is about 4076 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from London Heathrow Airport to Knoxville round-trip?

    Currently priced at $720, British Airways will fly you from London Heathrow Airport to Knoxville and back. In addition to British Airways, many other airlines offer competitively priced options for your trip. British Airways is priced at 21% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Heathrow to Knoxville that include hotel bookings?

    Yes. In addition to deals on Heathrow to Knoxville flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Heathrow to Knoxville?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Heathrow to Knoxville.

  • Can I find deals for business class flights from Heathrow to Knoxville?

    Yes. Cheapflights offers flight deals from Heathrow to Knoxville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Heathrow Airport to Knoxville?

    Currently, January is the cheapest month in which you can book a flight from London Heathrow Airport to Knoxville (average of $294). Flying from London Heathrow Airport to Knoxville in March is currently the most expensive (average of $376). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Knoxville?

Book flights to Knoxville if you plan to visit one of these locations
Morristown
Cherokee
Corbin
Alcoa
Oak Ridge
Murphy

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Top airline flying from Heathrow to Knoxville

Discover the top airline that operate flights from Heathrow to Knoxville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$720Average$1,259FlexibilityNo cancel feeOn-time70%

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